From 37938463540b075e9166cf774c59274379f7a8ca Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 22 Mar 2014 06:57:37 -0400 Subject: [PATCH] blkdev_aio_read(): switch to generic_file_read_iter(), get rid of iov_shorten() Signed-off-by: Al Viro --- fs/block_dev.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/fs/block_dev.c b/fs/block_dev.c index 937e3011ed58..b140badb8184 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1538,14 +1538,17 @@ static ssize_t blkdev_aio_read(struct kiocb *iocb, const struct iovec *iov, struct file *file = iocb->ki_filp; struct inode *bd_inode = file->f_mapping->host; loff_t size = i_size_read(bd_inode); + size_t count = iocb->ki_nbytes; + struct iov_iter to; + + iov_iter_init(&to, READ, iov, nr_segs, count); if (pos >= size) return 0; size -= pos; - if (size < iocb->ki_nbytes) - nr_segs = iov_shorten((struct iovec *)iov, nr_segs, size); - return generic_file_aio_read(iocb, iov, nr_segs, pos); + iov_iter_truncate(&to, size); + return generic_file_read_iter(iocb, &to); } /* -- GitLab